InChI=1S/C22H28N2O4/c1-5-13-11-23(2)19-10-22(20-9-15(13)16(19)12-28-20)17-7-6-14(26-3)8-18(17)24(27-4)21(22)25/h5-8,15-16,19-20H,9-12H2,1-4H3/b13-5+/t15-,16-,19-,20+,22-/m0/s1